Structure in SAP HCM

Personnel Structure:
Personnel structure display the position of a personnel in the enterprise. It includes:
- Employee groups
- Employee subgroups

Example: Active, Retiree, External

Employee group:
- It is used for general term
- Employee group can be used to generate the default values for data entry, example for Payroll accounting area, employee's basic pay
- It can be used as entity for authorization check

Employee subgroup:
- Employee subgroup are subdivisions of employee group
- Employee subgroup examples for Active Employee group can be Salaried Employee, Hourly wage earner, ..
- Employee regulations are identified at Employee subgroup level

Organization Structure:
It is based on Organizational Plan
Organization uses organizational plan to set the relationship between individual departments and work-groups

Integration
If enter the position ( for an employee in Action infotype, then the Employee group, Employee subgroup and personnel information from organization are automatically filled as default values for Employee.